Hi sviau,
Thanks for posting in the community!
From your description, you're looking for a list of the errors and
exceptions which is likely occured when using the System.Web.Mail classes,
yes?
If there is anything I misunderstood, please feel free to let me know.
Based on my research, here're a FAQ site which particularly discussing all
the generall questions on the System.Web.Mail namespace's classes,:
#Frequently Asked Questions for System.Web.Mail
http://systemwebmail.com/
And also the FAQ contains the "4 Troubleshooting System.Web.Mail" part
which contains many general namespace or protocal related exceptions on the
System.Web components
#4 Troubleshooting System.Web.Mail
http://systemwebmail.com/faq/4.aspx
Please have a look to see whether they can answer your questions.
Regards,
Steven Cheng
Microsoft Online Support
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